摘要
提出了利用交流电信号源注入测量探头的“交流电位法”无损捡测原理,测定钢件表面裂纹侵入深度的定量数显方法。文中对这一测试原理作了简要论述,并提供了实施该测试原理的一个简易可行的电路,同时对该检测装置的精度进行了全面的分析。该装置中首次采用了单片机系统。
A method of quatitative digital display in measuring the depth of surface crack on the steel products is introduced. The principle of harmless detection, eg, alternative potentiometry, injecting the alternative current signal into measurement sensor's head is chiefly discussed. A Simple and used circuit of measurment was given. Also the princision of this measurement instrumetation is analysed particularly, in this instrumetation the single-chip microprocessor was used, the report about this has not yet been made in Chi-na.
关键词
交流电位法
表面裂纹
钢件
检测
Harmless detection
alternative potentiometry
Surface crack
Single-chip microprocessor
Digital display~.
